Improvement in sash-holder



nihed' Sttte ,amd @time JOEL GARRETSON AAND OLIVER S. -GARRETSON, OF BUFFALO, NEW

YORK.

Letters .Patent No. 96,908, elated .November 16, 1869.

IMPROVEMENT IN SASH-HOLDER.

The Schedule referred t in these Letters Patent and making part of the same.

To all whom it may concern Be it known thatl we, J ont G. GAnRnTsoN and OLlvER S. GARRnTsoN, of Buffalo, in the county of Erie, and State of New York, have invented a certain new and useful Improvement in Sash-Locks; and we do hereby declare that the following is a full and exact description thereof', reference being had to the accompanying drawings, making part of this speciication.

Figure 1 is a perspective view of the lock complete.

Figure 2, 3, 4, and 8, are different views of the case or frame of the lock.

Figures 5, 6, and 7, are different views of the bottom-plate.

Figures 9 and 10 are views ofthe eccentric.

Figures 11 and 12 are views of the cam-bolt.

Like letters of reference indicate corresponding parts in all of the figures.

Our improvements belong to that class in which the lock is applied to the sash of the window, and acts against the window-strip, to prevent the sash from heilig raised from the outside, and to prevent its falling when raised.

A sash-fasteuer, consisting of a bolt, which is pressed by an eccentric against the casing, so as to prevent the raising or lowering of the sash, is old, and such we do not broadly claim.

Our invention consists- First, in so constructing and arranging the cam or eccentric with a` slotted cam-headed bolt, that the pivot which secures the former shall pass through the slot in the latter, and form a common pivot or centre for both, so as to permit the head of t-he bolt to yield vertically, and cause the cam-'surface thereof, in coutact with the casing, to wedge againstlthe latter, as the sash is attempted to be raised or lowered.

Second, in providing this slotted bolt with a lng at its outer end, with which the leccentric or cam-lever engages, and withdraws the bolt from contact with the casing in releasing the sash.

As represented in the drawings- `A is the case of the lock, recessed to receive the cam-bolt B and bottom-plate C.

It is also provided with a hole atits centre, for the rivet E to pass through, which holds all the parts of the lock together.

It is further 'provided with holes at its ends, for the reception of screws to fasten it to the sash of the window.

D is the eccentric, and pivots on rivet E, which passes through it a little out of centre, so that it revolves ccceutrically to throw forward the bolt B.

It is also provided with a lever and thumb-piece, D,

The cam-bolt B is provided with a slot a, tig. 1 1, to

allow it to move back and forth over rivet E.

It is provided, further, with a double cam-shaped head, with its periphery struck on a greater circle than if struck from any point within the slot a., fig. 11.

It is also provided with a projection, b, fig. 1, which engages with the periphery ofthe ecceutric'D, to

draw the bolt away from the window-strip, so as to allow the sash to move freely.

The operation of our improved fastener will. be readily understood. y

Then the eccentric D is revolved, its periphery presses against the head of bolt B, and moves it forward against the wil'ldow-strip to support the sash.

The friction of the bolt against the window-strip tends to throw the head `of the bolt in an opposite drection from that in which the sash is moving, and thus throws ont a portion of the bolt-head that is further from the centre than the point at which it touched when thrown up-hy the eccentric, thus locking and holding the sash more firmly than it would do it'the head of the` -bo'lt was a plain surface or was a segment struck from any point within the slot a of the bolt B.

By this arrangement we secure several important advantages g First. l'he head of the bolt that bears against the window-strip is large and very slightly rounded, thus giving a large bearing against the wimlow-st1i1. ,to pevent bruising or marring it, as is common with surface-locks. l

Second. The lock is easily applied and operated, and has no spring or other delicate parts to get out of order. v

Third. All the parts are simple of construction, and can be moulded and cast complete without drilling 0r other finishing, thus enabling it to be cheaply constructed.

WVhatwe claim as onr invention, and desire to secure by Letters Patent, is- I 1. The eccentric I), and the slotted and cam-headed bolt B, when so constructed and arranged that the pivot of the former shall pass through the slot in the lat-ter, and form a common pivot for both, substantially in the manner set forth. 2. The lug b, at the outer end of the bolt B, arranged with the cam D, so that the-latter inl releasing the bolt shall engage with the lug, and withdraw the bolt from contact with the casing, as hereiubefore set forth.

In witness whereof, we have hereunto signed our names, in the presence of two subscrihin g witnesses.

'.T. G. GARRETSON. OLlVER S. GARRETSON.

.lVitnessesz OUYLER GARRE'r'r, LoUIs Piz-Uso. 

